I never used brew to install or manage my python precisely because it gave me so many issues.
I’m constantly fighting Brew on all three computers where Brew is installed. Yes, I have wiped them, the problem is Brew, it is not the particular installation. If it were a problem with one particular installation of Brew, then it would not suddenly become a problem on a new fresh install of Brew.
The idea that you would need to wipe anything to start over is just bizarre to me in the first place. One of the many problems with Brew. Brew is extremely slow and it is prone to doing things that I do not want it to do without explaining why it is doing them or how I can alter its behavior (why is it installing package X? why is it updating right now?). Sometimes when I install a package, I get a spurious failure, and I need to re-run the installation command. Sometimes I just want to install one package, but it goes through “brew update”—which is extremely slow.
When you have some time might be worth it to start over. Don't use brew to install/manage your python, try it like how I wrote.